Re-partition selected in OdinGeneral

Trying to update my android using Odin on an i9003, i downloaded an offcicial rom from sammobile. But i used a pit file when updating with the Re-partition selected. Now i know it was totally wrong. But anyway,The result is a boot problem and my phone is stuck on Samsung logo. I don't know how to fix this. Pleaase does anyone have an idea how to get out of all this mess !